public void Test_Bytes_ConstructedPacketWithFcsIncluded()
{
//We will use a DataDataFrame for this test but the
//type isn't really important.
var dataFrame = new DataDataFrame();
dataFrame.FrameControl.FromDS = true;
dataFrame.BssId = PhysicalAddress.Parse("AABBCCDDEEFF");
dataFrame.SourceAddress = PhysicalAddress.Parse("AABBCCDDEEFF");
dataFrame.DestinationAddress = PhysicalAddress.Parse("112233445566");
dataFrame.PayloadData = new Byte[] { 0x1, 0x2, 0x3, 0x4 };
//Force it to recalculate the FCS and include it when serialised
dataFrame.UpdateFrameCheckSequence();
dataFrame.AppendFcs = true;
Assert.IsTrue(dataFrame.FCSValid);
var expectedLength = dataFrame.FrameSize + dataFrame.PayloadData.Length + 4;
Byte[] frameBytes = dataFrame.Bytes;
Assert.AreEqual(expectedLength, frameBytes.Length);
Assert.AreEqual(dataFrame.FrameCheckSequence.ToString("X"),
EndianBitConverter.Big.ToUInt32(frameBytes, frameBytes.Length - 4).ToString("X"));
Assert.AreEqual(dataFrame.FrameCheckSequence,
EndianBitConverter.Big.ToUInt32(frameBytes, frameBytes.Length - 4));
}
public void Test_Constructor_UnecryptedDataFrameFromValues()
{
DataDataFrame frame = new DataDataFrame();
frame.FrameControl.ToDS = false;
frame.FrameControl.FromDS = true;
frame.FrameControl.MoreFragments = true;
frame.SequenceControl.SequenceNumber = 0x89;
frame.SequenceControl.FragmentNumber = 0x1;
frame.Duration.Field = 0x1234;
frame.DestinationAddress = PhysicalAddress.Parse("111111111111");
frame.SourceAddress = PhysicalAddress.Parse("222222222222");
frame.BssId = PhysicalAddress.Parse("333333333333");
frame.PayloadData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 };
frame.UpdateFrameCheckSequence();
UInt32 fcs = frame.FrameCheckSequence;
//serialize the frame into a byte buffer
var bytes = frame.Bytes;
var bas = new ByteArraySegment(bytes);
//create a new frame that should be identical to the original
DataDataFrame recreatedFrame = MacFrame.ParsePacket(bas) as DataDataFrame;
recreatedFrame.UpdateFrameCheckSequence();
Assert.AreEqual(FrameControlField.FrameSubTypes.Data, recreatedFrame.FrameControl.SubType);
Assert.IsFalse(recreatedFrame.FrameControl.ToDS);
Assert.IsTrue(recreatedFrame.FrameControl.FromDS);
Assert.IsTrue(recreatedFrame.FrameControl.MoreFragments);
Assert.AreEqual(0x89, recreatedFrame.SequenceControl.SequenceNumber);
Assert.AreEqual(0x1, recreatedFrame.SequenceControl.FragmentNumber);
Assert.AreEqual("111111111111", recreatedFrame.DestinationAddress.ToString().ToUpper());
Assert.AreEqual("222222222222", recreatedFrame.SourceAddress.ToString().ToUpper());
Assert.AreEqual("333333333333", recreatedFrame.BssId.ToString().ToUpper());
CollectionAssert.AreEqual(new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 }, recreatedFrame.PayloadData);
Assert.AreEqual(fcs, recreatedFrame.FrameCheckSequence);
}
public void Test_Bytes_ConstructedPacketWithFcsNotIncluded()
{
//We will use a DataDataFrame for this test but the
//type isn't really important.
var dataFrame = new DataDataFrame();
dataFrame.FrameControl.FromDS = true;
dataFrame.BssId = PhysicalAddress.Parse("AABBCCDDEEFF");
dataFrame.SourceAddress = PhysicalAddress.Parse("AABBCCDDEEFF");
dataFrame.DestinationAddress = PhysicalAddress.Parse("112233445566");
dataFrame.PayloadData = new Byte[] { 0x01, 0x02, 0x03, 0x04 };
//Force it to recalculate the FCS but don't include it when serialised
dataFrame.UpdateFrameCheckSequence();
dataFrame.AppendFcs = false;
var expectedLength = dataFrame.FrameSize + dataFrame.PayloadData.Length;
var frameBytes = dataFrame.Bytes;
Assert.AreEqual(expectedLength, frameBytes.Length);
//Check that we get last four bytes of data at the end rather than the FCS
Assert.AreEqual(0x01020304, EndianBitConverter.Big.ToUInt32(frameBytes, frameBytes.Length - 4));
}
public void Test_Constructor_UnecryptedDataFrameFromValues ()
{
DataDataFrame frame = new DataDataFrame ();
frame.FrameControl.ToDS = false;
frame.FrameControl.FromDS = true;
frame.FrameControl.MoreFragments = true;
frame.SequenceControl.SequenceNumber = 0x89;
frame.SequenceControl.FragmentNumber = 0x1;
frame.Duration.Field = 0x1234;
frame.DestinationAddress = PhysicalAddress.Parse ("111111111111");
frame.SourceAddress = PhysicalAddress.Parse ("222222222222");
frame.BssId = PhysicalAddress.Parse ("333333333333");
frame.PayloadData = new byte[]{0x01, 0x02, 0x03, 0x04, 0x05};
frame.UpdateFrameCheckSequence ();
UInt32 fcs = frame.FrameCheckSequence;
//serialize the frame into a byte buffer
var bytes = frame.Bytes;
var bas = new ByteArraySegment (bytes);
//create a new frame that should be identical to the original
DataDataFrame recreatedFrame = MacFrame.ParsePacket (bas) as DataDataFrame;
recreatedFrame.UpdateFrameCheckSequence();
Assert.AreEqual (FrameControlField.FrameSubTypes.Data, recreatedFrame.FrameControl.SubType);
Assert.IsFalse (recreatedFrame.FrameControl.ToDS);
Assert.IsTrue (recreatedFrame.FrameControl.FromDS);
Assert.IsTrue (recreatedFrame.FrameControl.MoreFragments);
Assert.AreEqual (0x89, recreatedFrame.SequenceControl.SequenceNumber);
Assert.AreEqual (0x1, recreatedFrame.SequenceControl.FragmentNumber);
Assert.AreEqual ("111111111111", recreatedFrame.DestinationAddress.ToString ().ToUpper ());
Assert.AreEqual ("222222222222", recreatedFrame.SourceAddress.ToString ().ToUpper ());
Assert.AreEqual ("333333333333", recreatedFrame.BssId.ToString ().ToUpper ());
CollectionAssert.AreEqual (new byte[]{0x01, 0x02, 0x03, 0x04, 0x05}, recreatedFrame.PayloadData);
Assert.AreEqual (fcs, recreatedFrame.FrameCheckSequence);
}
public void Test_Bytes_ConstructedPacketWithFcsNotIncluded()
{
//We will use a DataDataFrame for this test but the
//type isn't really important.
var dataFrame = new DataDataFrame();
dataFrame.FrameControl.FromDS = true;
dataFrame.BssId = PhysicalAddress.Parse("AABBCCDDEEFF");
dataFrame.SourceAddress = PhysicalAddress.Parse("AABBCCDDEEFF");
dataFrame.DestinationAddress = PhysicalAddress.Parse("112233445566");
dataFrame.PayloadData = new byte[]{0x01, 0x02, 0x03, 0x04};
//Force it to recalculate the FCS but don't include it when serialised
dataFrame.UpdateFrameCheckSequence();
dataFrame.AppendFcs = false;
var expectedLength = dataFrame.FrameSize + dataFrame.PayloadData.Length;
var frameBytes = dataFrame.Bytes;
Assert.AreEqual(expectedLength, frameBytes.Length);
//Check that we get last four bytes of data at the end rather than the FCS
Assert.AreEqual(0x01020304, EndianBitConverter.Big.ToUInt32(frameBytes, frameBytes.Length - 4));
}
public void Test_Bytes_ConstructedPacketWithFcsIncluded()
{
//We will use a DataDataFrame for this test but the
//type isn't really important.
var dataFrame = new DataDataFrame();
dataFrame.FrameControl.FromDS = true;
dataFrame.BssId = PhysicalAddress.Parse("AABBCCDDEEFF");
dataFrame.SourceAddress = PhysicalAddress.Parse("AABBCCDDEEFF");
dataFrame.DestinationAddress = PhysicalAddress.Parse("112233445566");
dataFrame.PayloadData = new byte[]{0x1, 0x2, 0x3, 0x4};
//Force it to recalculate the FCS and include it when serialised
dataFrame.UpdateFrameCheckSequence();
dataFrame.AppendFcs = true;
Assert.IsTrue(dataFrame.FCSValid);
var expectedLength = dataFrame.FrameSize + dataFrame.PayloadData.Length + 4;
byte[] frameBytes = dataFrame.Bytes;
Assert.AreEqual(expectedLength, frameBytes.Length);
Assert.AreEqual(dataFrame.FrameCheckSequence.ToString("X"),
EndianBitConverter.Big.ToUInt32(frameBytes, frameBytes.Length - 4).ToString("X"));
Assert.AreEqual(dataFrame.FrameCheckSequence,
EndianBitConverter.Big.ToUInt32(frameBytes, frameBytes.Length - 4));
}